Why not to raise the flop with KJ/AJ or whatsoever. We need to protect.
Your UTG range will also contain a lot of PPs which will pay us. Plus also protects from FD.

So therefore I might even leave my hand alone on the turn while we can never be sure if the guy would have that many bluffs/draw type of hands in his range. Seems to be pretty passive guy.

If we Call the turn then not much to comment, we went for bluff-catch or hope to see something like K:sQ/A:sK. Although not sure if such a guy would even Bet the river for value anymore while he doesn't get called from a lot worse.